DOS 6.X Compatibility

Compatibility issues with the 6.X versions of DOS are as follows:

DoubleSpace incompatible with lnvisibleLAN versions prior to 3.42.

DOS's DoubleSpace disk compression utility installs itself in such a manner that it appears to the InvisibleLAN Disk Cache product as the first device driver in CONFIG.SYS. As the CACHE30.SYS must be the first device driver, the cache (and thus the remainder of the network) will not load. The following solutions are available:

• Upgrade the network version to 3.42 or above.

• Use DOS's SMARTDRIVE as your disk cache. Consult your DOS manual for further instructions. Note that the CACHE30.SYS device driver need not be loaded if SMARTDRIVE (or no disk cache) is used.

• Download CACHE2G.ZIP from the Invisible Software web site, and use this newer version of the InvisibleLAN Disk Cache.

"Incorrect DOS version" errors possible.

This may occur on a file server (or other machine) that loads SHARE.EXE as part of the loading of the network. Should this error occur during the network load process, simply copy SHARE.EXE from your DOS directory to the NET30 directory and reboot the machine. Note that this error could only occur if the machine were previously running a different version of DOS.

DOS's MEMMAKER command.

MEMMAKER, a DOS memory optimization program, if run on a system also running InvisibleLAN, will very likely place DEVICEHIGH statements on the network device drivers (CACHE30.SYS and N30DEV.SYS) in CONFIG.SYS and may place a LOADHIGH (or LH) command on the NET30.EXE command in AUTOEXEC.BAT. This must be avoided, as it may cause problems properly loading or operating the network. Changes of this nature can be cured or avoided as follows:

• If MEMMAKER has already been run, remove the DEVICEHIGH and LOADHIGH statements using an editor such as DOS's EDIT or EDLIN. Consult your DOS manual for information on these editors.

• Avoid the changes by pIacing REMARK (or REM) statements on the lines containing the InvisibleLAN program lines in CONFIG. SYS and AUTOEXEC.BAT prior to running MEMMAKER. Remove the REMARKs after MEMMAKER has completed its run.

• Avoid the changes by making the necessary changes to the MEMMAKER.INI file. Consult the documentation on MEMMAKER for further information.

• Configure MEMMAKER to prompt you before making each change to the CONFIG.SYS and AUTOEXEC.BAT files. Consult the documentation on MEMMAKER for further information.

No further incompatibilities with DOS versions 6.X are known as of the date of this document.

Notices: Copyright 1994 by Invisible Software, Inc. Invisible Software and InvisibleLAN are trademarks of Invisible Software, Inc. Other trademarks are the property of their respective holders.

This document was prepared on 08/10/94, and was believed to be accurate as of that date. Procedures, specifications, and compatibility may change without notice, and therefore this document may be out-of-date and/or inapplicable to current product versions. Invisible Software provides this document "AS IS" and without warranty of any kind. Under no circumstances shall this document be construed as creating or expanding any warranty of product performance.

Go back to Support FAQ.